i.MX28: Boot on SPI Flash and usb_loader

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i.MX28: Boot on SPI Flash and usb_loader

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gaetancarlier
Contributor I

Hello,

I am currently designing a board based on a i.MX28 and I have some questions:

1) As I am working under Linux and MfgTools (Mfgtools-Rel-1.6.2.032) only provides Windows binary, is the usb_loader tool (git repo git://github.com/boundarydevices/imx_usb_loader) works with i.MX28 to program SPI memory ?

1a) If yes, does it works with SPI NAND (Winbond W25X series) or does usb recovery mode only support SPI-NOR ?

1b) Do you have any config file for usb_loader to program SPI flash?

2) For the PSWITCH pin, can this pin directly linked to VDDXTAL at power-up in running mode.

To first-time program SPI flash memory, I will force PSWITCH pin to VDDIO_3V3 at power-up and then apply VDDXTAL (using jumper) before resetting board to access newly programmed bootloader

3) Does any Winbond W25X SPI flash memories work or only W25X10/W25X80 work ?

Thank you for your help.

Best regards,

Gaëtan.

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fabio_estevam
NXP Employee
NXP Employee

Gaëtan,

You can use the mxsldr tool:

http://git.denx.de/?p=mxsldr.git;a=summary

Regards,

Fabio Estevam

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gaetancarlier
Contributor I

By reading MXSSB, a simple replacement for elftosb2 | DENX Computer Systems , I convert bin to sb with -v argument

$ ./mxssb/mxssb -c ./mxssb/mxsimage.mx28.cfg -o ./u-boot/spl/u-boot-spl.sb -v

$ ./mxsldr/mxsldr u-boot/spl/u-boot-spl.sb

and now I have this on Debug UART from BootROM

HTLLC

Which means that u-boot is executed but I have nothing more from u-boot on Debug UART

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gaetancarlier
Contributor I

Fabio,

I have build u-boot using these steps (both toolchains do not work):

#generic Tool chain from Linaro

#PATH=/opt/cross/arm/gcc-linaro-arm-linux-gnueabihf-4.7-2013.01-20130125_linux/bin:$PATH

#PREFIX=arm-linux-gnueabihf-

#Toolchain for i.MX27

PATH=/opt/cross/arm/imx27-ctng-gcc_4.5.3-libc_2.11.2/arm-unknown-linux-gnueabi/bin:$PATH

PREFIX=arm-unknown-linux-gnueabi-

make -j8 ARCH=arm CROSS_COMPILE=$PREFIX HOSTCC=gcc mrproper

make -j8 ARCH=arm CROSS_COMPILE=$PREFIX HOSTCC=gcc mx28evk_defconfig

make -j8 ARCH=arm CROSS_COMPILE=$PREFIX HOSTCC=gcc

Then I upload image to i.MX28 but it does not work

$ ./mxsldr/mxsldr u-boot/spl/u-boot-spl.bin

When the image is loaded, H is display on

If I convert bin image to sb using mxssb (git://git.denx.de/mxssb.git)

$ ./mxssb/mxssb -c ./mxssb/mxsimage.mx28.cfg -o ./u-boot/spl/u-boot-spl.sb

$ ./mxsldr/mxsldr u-boot/spl/u-boot-spl.sb

Nothing is displayed.

Regards,

Gaëtan.

ps:I can not generate the specific toolchain using fsl-community-bsp (from http://freescale.github.io) because I do not have enough space on computer to build all the stuff. But normally, Toolchain for i.MX27 is valid  for i.MX28. This is the same core, isn't it ?

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fabio_estevam
NXP Employee
NXP Employee

You should load u-boot.sb, not u-boot-spl.sb.

No need to do any conversion, just build it like 'make u-boot.sb' like in the sequence I sent you.

Also, are you able to get mainline U-boot booting from a SD card? You could try that as first step to make sure you have the correct toolchain.

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igorpadykov
NXP Employee
NXP Employee

Hi Gaetan

1. afaik usb_loader was developed by boundarydevices and supports only i.MX6

2. yes

3. support for new flash can be added to BSP, also suggest to look at below links

https://community.freescale.com/docs/DOC-93632

http://git.denx.de/?p=u-boot.git;a=blob;f=doc/README.mxs;h=ed2e5688562ac1af55a7c6213f5f3eb825e055b8;...

Best regards

igor

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gaetancarlier
Contributor I

Hi Igor,

1. So which tool under Linux can I use to flash Winbond W25X10 SPI flash

through i.MX28 in USB recovery mode under ?

Thank you,

Gaëtan.

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igorpadykov
NXP Employee
NXP Employee

Hi Gaetan

please follow procedure below

https://community.freescale.com/docs/DOC-93632

Best regards

igor

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gaetancarlier
Contributor I

Igor,

My problem is not how to compile i.MX28 target binaries (u-boot, kernel,

rootfs) nor how to tell u-boot how to boot itself or kernel on SPI but

how to flash u-boot image into SPI NOR Flash using USB recovery mode of

i.MX28 under Linux. May be I miss something in your link, but I do not

see anything about this.

MFGTool only works under Windows.

Using SD card (or any other boot mode to indirectly flash SPI NOR) is

not possible as there is only a SPI NOR and a eMMC.

The only solution will be the through JTAG but I will have to write the

OpenOCD script to initialize SPI controller (and I do not event know if

I will be able to read u-boot binary and send data bytes per bytes).

Best regards,

Gaëtan.

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fabio_estevam
NXP Employee
NXP Employee

Gaëtan,

You can use the mxsldr tool:

http://git.denx.de/?p=mxsldr.git;a=summary

Regards,

Fabio Estevam

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gaetancarlier
Contributor I

Hello,

I am back few months later

The board boot with provided SD card but when I try to boot from USB with SD card removed it fails. The goal is to have a console by loading a u-boot image from USB OTG in recovery mode and program SPI NOR and eMMC.

When I load a u-boot.sb image with mxsldr, nothing appears on debug uart when upload is done.

Is that normal ? I have i.mx28evk board and here what i have tried with Boot Mode set to USB0 ("0000")

$ mxsldr ./L2.6.35_1.1.0_130130_images_MX28/imx28_ivt_linux.sb

I do the same with :

./L2.6.35_1.1.0_130130_images_MX28/imx28_ivt_uboot.sb

./L2.6.35_1.1.0_130130_images_MX28/imx28_uboot.sb

./L2.6.35_1.1.0_130130_images_MX28/imx28_linux.sb

If it is not the correct sequence, what is the right way to proceed, is there a special u-boot configuration to build ?

Which is the correct u-boot configuration and the repo/branch to use ?

Thank you for your help.

Best regards,

Gaëtan.

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fabio_estevam
NXP Employee
NXP Employee

Please check the mxsldr README:

git.denx.de Git - mxsldr.git/blob - README

And please try it with a mainline U-boot.

If you still see issues, then please report them to the U-boot list.

Regards,

Fabio Estevam

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gaetancarlier
Contributor I

Dear Fabio,

I have read the README of-course. My host Linux kernel is 3.12.1-smp. HID are correctly detected and node is created and I checked Linux kernel sources and patches are already aplied.

$ taill /var/log/messages

Sep 10 08:33:14 localhost kernel: usb 2-1.1: new high-speed USB device number 5 using ehci-pci

Sep 10 08:33:14 localhost kernel: usb 2-1.1: New USB device found, idVendor=15a2, idProduct=004f

Sep 10 08:33:14 localhost kernel: usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0

Sep 10 08:33:14 localhost kernel: usb 2-1.1: Product: ROM Recovery

Sep 10 08:33:14 localhost kernel: usb 2-1.1: Manufacturer: Freescale,Inc.

Sep 10 08:33:14 localhost mtp-probe: checking bus 2, device 5: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1"

Sep 10 08:33:14 localhost mtp-probe: bus: 2, device: 5 was not an MTP device

Sep 10 08:33:14 localhost mtp-probe: checking bus 2, device 5: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1"

Sep 10 08:33:14 localhost mtp-probe: bus: 2, device: 5 was not an MTP device

Sep 10 08:33:14 localhost kernel: hidraw: raw HID events driver (C) Jiri Kosina

Sep 10 08:33:14 localhost kernel: usbcore: registered new interface driver usbhid

Sep 10 08:33:14 localhost kernel: usbhid: USB HID core driver

Sep 10 08:33:14 localhost kernel: hid-generic 0003:15A2:004F.0001: hiddev0,hidraw0: USB HID v1.10 Device [Freescale,Inc. ROM Recovery] on usb-0000:00:1d.0-1.1/input0

I have also tried with Debian 8 Kernel 3.16.0 but same behaviour.

Here is what mxsldr returns :

$ ./mxsldr/mxsldr ./L2.6.35_1.1.0_130130_images_MX28/imx28_uboot.sb

Detected: i.MX28

Chip ID:          0x2800

Chip Revision:    0x0001

ROM Version:      0x0101

Protocol Version: 0x0100

$ echo $?

0

If I run mxsldr again nothing appends. No new message appears on Debug UART or in /var/log/messages. I have to press reset to be able to run mxsldr "correctly".

(All tests done with official i.MX28evk board)

Thank you

Best regards,

Gaëtan.

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fabio_estevam
NXP Employee
NXP Employee

Please try mainline U-boot.

Regards,

Fabio Estevam

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gaetancarlier
Contributor I

Fabio,

I just compile u-boot from mainline repository (git.denx.de Git - u-boot.git/summary ) using imx28evk_defconfig and send it with mxsldr with Boot Mode switches set to 0000 and when mxsldr returns, u-boot must display text on Debug UART, that's it ?

Best regards,

Gaëtan.

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fabio_estevam
NXP Employee
NXP Employee

Yes, just tested and it is working fine.

Build U-boot:

make mrproper

make mx28evk_defconfig

make u-boot.sb

Copy u-boot.sb to the mxsldr dir.

Set the jumpers to 0 0 0 0.

Connect USB cable from mx28evk to the host PC.

Power up the board.

sudo ./mxsldr u-boot.sb

Detected: i.MX28

Chip ID:          0x2800

Chip Revision:    0x0001

ROM Version:      0x0101

Protocol Version: 0x0100

and then U-boot messages come up:

=> HTLLCLLC                                                               
                                                                          
U-Boot 2015.10-rc3-dirty (Sep 10 2015 - 12:30:16 -0300)                   
                                                                          
CPU:   Freescale i.MX28 rev1.2 at 454 MHz                                 
BOOT:  USB #0                                                             
SPI:   ready                                                              
DRAM:  128 MiB                                                            
NAND:  0 MiB                                                              
MMC:   MXS MMC: 0                                                         
Video: MXSFB: 'videomode' variable not set!                               
In:serial                                                             
Out:   serial                                                             
Err:   serial                                                             
Net:   FEC0 [PRIME], FEC1                                                 
Hit any key to stop autoboot:  0                                          

=>

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gaetancarlier
Contributor I

Thank you Fabio, it works.

make u-boot.sb was missing.

I used mxssb to generate sb file but it didn't worked.

And for sb images provided in Linux Binary Demo Files I have to used ivt files to have some text on Debug UART (L2.6.35_1.1.0_130130_images_MX28/imx28_ivt_uboot.sb or L2.6.35_1.1.0_130130_images_MX28/imx28_ivt_uboot.sb) ?

My mistake sorry.

Best regards,

Gaëtan.

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gaetancarlier
Contributor I

Hi Fabio,

Thank a lot for your answer.

Best regards,

Gaëtan.

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